106 Trans. Acad. Sci. of St. Louis 
Spiranthes ovalis Lindl. (Ibidium ovale (Lindl.) 
House). Conway, Faulkner Co. 
Spiranthes vernalis Engelm. & Gray. Fayette- 
ville, Washington Co.; 8146 Ozark, Franklin Co. 
Corrallorrhiza Wisteriana Conrad. Fayetteville, 
Washington Co.; Fulton, Hempstead Co. 
Pogonia verticillata (Willd.) Nutt. 26894 Law- 
rence, Garland Co. 
DICOTYLEDONAE. 
Salicaceae: 
Populus balsamifera var. virginiana (Henry) Sarg. 
Common Cottonwood. Formerly Populus deltoides 
Marsh. (P. monilifera Ait.) Distribution general 
along streams. 
Salix cordata Muhl. J ohnston, Washington Co. 
Salix nigra var. altissima Sarg. Tall black wil- 
low. 5394 Fulton, Hempstead Co. 
Saliaz longifolia Muehl. Sand Bar Willow. 24978, 
McNab, Hempstead Co.; 25013, Little Rock, Pulaski 
Co.; 25085, Helena, Phillips Co. 
Salix longipes var. Wardii (Bebb) Schneider. 
Ward’s willow. Fayetteville, Washington Co.; 
Eureka Springs and Beaver, Carroll Co.; Cotter, 
Marion Co. 
Salix longipes var. Wardii x nigra. 20500 Eureka 
Springs, Carroll Co. 
Leitneriaceae: 
Leitneria floridana Chapm, Cork tree. 4792 
Moark, 6074 Corning, Clay Co.; St. Francis River 
swamps (S. M. Coulter). 
